Steam and hot-water boiler



W. R. PARKS. Steam and Hotwater Boiler.

.No. 229,173. Patented June 22,1880.

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NJEIERS. PHOTO-LITHOGRAPHER, WASHINGTON D O.

UNITED STATES PATENT OFFICE.

WILLIAM R. PARKS, OF PALMER, MASSACHUSETTS.

STEAM AND HOT-WATER BOILER.

SPECIFICATION forming part of Letters Patent No. 229,173, dated June 22,1880. Application filed September 24, 1 879.

To all whom it may concern Be it known that I, WILLIAM R. PARKS, ofPalmer, in the county of Hampden and State of Massachusetts, haveinvented a new and Improved Steam and Hot-Water Boiler, of which thefollowing is a specification.

The object of myinvention is to construct a boiler which shall heatwater and make steam rapidly with a small amount of fuel, and at thesame time be durable.

The construction will be more particularly explained with reference tothe accompanying drawings, and the invention pointed out in the claim.

In the drawings, Figure 1 is a vertical longitudinal section of a boilerconstructed in accordance with my invention. Fig. 2 is a verticalcrosssection on line 00 w of Fig. 1.

Similar letters of reference indicate correspondin g parts.

A is the water box or tank forming the front of the boiler. This ispreferably made in the form of a flat-sided oblong box, of sufficientcapacity for holding the required amount of Water, according to thepurposes the boiler is used for, and with sufficient steam-space abovethe water.

At the back of the tank A the tubes to are connected. These are arrangedin lines, each tube a being opposite the space between the two tubesabove or below, and are connected together in pairs at their outer endsby returnbend couplings b, the tubes in one line being connected to thetubes next below, so that each pair contains an upper and lower tube.

The tubes a pass intermediately of their length through the verticalplate 0, and near their outer end through the plate d. These plates 0 dsustain and stay the tubes laterally and vertically.

The boiler will be set in afurnace, as shown,

0 being the grate, f the front wall, 9 the escapeflue, and h thebridge-wall. The tankAis supported by the frontwall, f, the plate Grests upon and forms a continuation of the bridgewall h, and the plate drests on the back wall, so that the products of combustion are compelledto pass through between tubes at, over the top of plate 0, and downbetween the tubes at, in front of plate d, to the flue g. In passinbetween the tubes the current is broken up and divided bythe tubes andthe heat particles caused to come in intimate contact with the tubes.The plate d protects the elbow-join ts b from the direct heat of thefurnace.

Both plates 0 and d may extend to the bottom of the furnace instead ofbeing supported by brick, and the whole apparatus may be made inportable form.

The water-tank A should extend sufficiently far above the upper tubes togive space for steam and at the same time keep the tubes covered withwater. The water will circulate rapidly in each pair of tubes, so thatit will become rapidly heated.

The boiler is to be furnished with the usual appliances, such asgage-cocks, a safety-valve, &c.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- In steam-generators and hot-water boilers, the steamand water box A, the tubes a, at-

WILLIAM R. PARKS.

Witnesses S. S. TAFT, H. A. NORTHROP.

